Search: id:"swepub:oai:DiVA.org:su-187841" >
The low-luminosity ...
The low-luminosity Type II SN2016aqf : a well-monitored spectral evolution of the Ni/Fe abundance ratio
-
Müller-Bravo, Tomás E. (author)
-
Gutiérrez, Claudia P. (author)
-
Sullivan, Mark (author)
-
show more...
-
- Jerkstrand, Anders (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Max-Planck Institut für Astrophysik, Germany
-
Anderson, Joseph P. (author)
-
González-Gaitán, Santiago (author)
-
- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
Arcavi, Iair (author)
-
Burke, Jamison (author)
-
Galbany, Lluís (author)
-
Gal-Yam, Avishay (author)
-
Gromadzki, Mariusz (author)
-
Hiramatsu, Daichi (author)
-
Hosseinzadeh, Griffin (author)
-
Howell, D. Andrew (author)
-
Inserra, Cosimo (author)
-
Kankare, Erki (author)
-
Kozyreva, Alexandra (author)
-
McCully, Curtis (author)
-
Nicholl, Matt (author)
-
Smartt, Stephen (author)
-
Valenti, Stefano (author)
-
Young, Dave R. (author)
-
show less...
-
(creator_code:org_t)
- 2020-07-06
- 2020
- English.
-
In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 497:1, s. 361-377
- Related links:
-
https://orca.cardiff...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Low-luminosity Type II supernovae (LL SNe II) make up the low explosion energy end of core-collapse SNe, but their study and physical understanding remain limited. We present SN 2016aqf, an LL SN II with extensive spectral and photometric coverage. We measure a V-band peak magnitude of −14.58 mag, a plateau duration of ∼100 d, and an inferred 56Ni mass of 0.008 ± 0.002 M⊙. The peak bolometric luminosity, Lbol ≈ 1041.4 erg s−1, and its spectral evolution are typical of other SNe in the class. Using our late-time spectra, we measure the [O i] λλ6300, 6364 lines, which we compare against SN II spectral synthesis models to constrain the progenitor zero-age main-sequence mass. We find this to be 12 ± 3 M⊙. Our extensive late-time spectral coverage of the [Fe ii] λ7155 and [Ni ii] λ7378 lines permits a measurement of the Ni/Fe abundance ratio, a parameter sensitive to the inner progenitor structure and explosion mechanism dynamics. We measure a constant abundance ratio evolution of 0.081+0.009−0.010 and argue that the best epochs to measure the ratio are at ∼200–300 d after explosion. We place this measurement in the context of a large sample of SNe II and compare against various physical, light-curve, and spectral parameters, in search of trends that might allow indirect ways of constraining this ratio. We do not find correlations predicted by theoretical models; however, this may be the result of the exact choice of parameters and explosion mechanism in the models, the simplicity of them, and/or primordial contamination in the measured abundance ratio.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- techniques: photometric
- spectroscopic telescopes
- supernovae: individual: SN2016aqf
- transients: supernovae
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Müller-Bravo, To ...
-
Gutiérrez, Claud ...
-
Sullivan, Mark
-
Jerkstrand, Ande ...
-
Anderson, Joseph ...
-
González-Gaitán, ...
-
show more...
-
Sollerman, Jespe ...
-
Arcavi, Iair
-
Burke, Jamison
-
Galbany, Lluís
-
Gal-Yam, Avishay
-
Gromadzki, Mariu ...
-
Hiramatsu, Daich ...
-
Hosseinzadeh, Gr ...
-
Howell, D. Andre ...
-
Inserra, Cosimo
-
Kankare, Erki
-
Kozyreva, Alexan ...
-
McCully, Curtis
-
Nicholl, Matt
-
Smartt, Stephen
-
Valenti, Stefano
-
Young, Dave R.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
- Articles in the publication
-
Monthly notices ...
- By the university
-
Stockholm University